Vacuum pump and tank



Jan. 13, 1931. R. BUSLAFF ET'AL VACUUM PUMP AND TANK Filed Jan. 12. 1929 s Sheet s-Sheet 1 ELM Jan. 13, 1931. RIBUSLAFF ETAL YACUUM PUMP AND TANK 3 Sheets-Sheet 2 Filed Jan. 12, 1929 H. 5115.75.29" HL E12 5]:

Jan. 13, 1931. R. BUSLAFFYETAL 1,788,907

VACUUM PUMP AND TANK 1 Filed Jan. 12, 1929 3 Sheets-Sheet 3 I /flaeih HEzzs/aff HL.EJ7 5/5 V Patented Jan, 13, 1931 S A E RoLIiAunBUsLArF; or WAUKESH'A, AND HER AN E eELsor MARSHFIELD, wIsconsm, ASSIGNOBS To UNIVERSAL MILKINGYMACHINE CO P Y, or wa x sHA, I

' WISOONSIK] VACUUMPU P AND'TAJNKV V This invention relates to a vacuum tank and pump, particularly intended for use milking machmes.

Objects of this invention are to provide a recombined pump and vacuum" tank which are formed as a unit 1 and which' are so con-V V structecl and interf'related that the entire structure is-not top l1eavy,nor, 1s 1t very large, and in which adequate bracing for the I pump and motor is securedwhile permitting the free removal of the pump and motor for.

repair, inspection or other purposes, with a minimum of parts that; need-be handled.

Further objectsa-reioprov de a device in which the vacuum tank itself issom'adethat a compartment is formedwhich constitutes the crankcase and oil-carrying portion of the pump, in whichthe pump is securely braced with reference to the tank, in which the .pump is so constructedthat the cylinder andtheoperating parts thereoffmay be'reade ily removed from the tank and also cooperate with the tank to prevent splashing orleaking' of the oil outwardly therefrom, and which.

prevents the entrance of moisture or dirt into the crank case. I, r

' Further ob ec ts are to provide a device in I which the vacuum tank serves in its normal? capacity as avacuum-tank and also serves as a .bas'efor the pump and motor, and in addi- 7 tion' provides a pocket'at one endwhich'serves as a crank case, without in any way-requiring a heavier construction for the tank and with-f out requiring any. elaborate ordilficultopera tions in the production ofthe tankQ T of pump in which the valves are very simple ,andare:carriediby a valve unit which i freely'removableltofltherebyr'afiord easyl 'acnew t rei skbif k m y- Figure 2. in sect" vFigure l-jis 'a'ls'i de-elevationof the-appa ofFigure 5L1,-

so; Fig res-13is nfeniargd sectional vi'ew with cess to the vaivesandiin which the valves are,

place.

nalviewon the line 1 pump struc-, v

that a r'ectangular'vacuum tankl is provided and is equipped with 'a pluralityof bosses-2,

welded-to the innerside ofthe tank and threaded to receive the attaching boltsof'the;

electric motor 3; This motor i d fit on, t P; 0f fhevachumtank, s Shown in Figure .1, and is provided with a driving ,pull'eyh J The vacuumtank is provided with a drain plug 5 and wit-h an inlet pipe 6 adapted to lead to the milking machinepor theap paratus with which the deviceisused.

" The vacuum tank is provided with a small,

upwardly opening compartment which sealed n an air-t ght manner,'by weldinggorother omeans,-from the interior of ,thetank.

.The compartment- 7 serves as a crank case.

for a pump, and the pump isformed preferably with aflpair of cylinders ,8 provided with a flanged outwardly attending flared portion or bottom 9, such porti'on being provided with a downwardly extending flange 10 adapted: to fit into the comp-arti'ncnt t7, and with an outwardly extending flange 11 adapted toi'est upon-the upper portion of the tank,

as shown in Figure 3.

The base portion of ceive bolts 13;extending through the walls of the cylinders of the pump areprovided with aperturedlugsl2v located within'the tank-and adaptedtO-re-i Further objects are to provide a novel form o the tank, as maybeseen,fromF-igures land 8. I V

7 One side of the compartment 7 is provided,

with a slot 14*to receive thecrank 1shaft115 of thepun p-,;suc h crankshaft being carried by a pair of bearingmembers 16 on opposite sides-10f the compartment *7, such bearing members being formed:integrally with the cylinder block. ,One ofthebearing members closes the slotwhen the pump is slipped into t From the construction thus far given, it is apparent that stresses are not impartedjto.

the tank by rotatingthe pump shaft, but in stea d, allofthe stressesare borne by the inte v by links 16with pistons 17 rig-are i: 10

positioned and its within gra-l pump structure itself. The pump shaft is provided with a pair of cranks connected The'cylinders are provided with an integral, laterally extending" valve head 18 (seeingqrezi)within* wh ch relatively wide andnarrow' passage ways or ducts 19 are formed, such passageways leading-nntothe cylindersas shown n- Further, each' msagwag iemie'w zi'fi ii'ii drical aperture 20 which communicates with a relatively smaller cylindrical aperture- 21,;

need be described; The unit consists of. a member 26 which fits withinthe cavity of opening 20 and} rests Yup on the 1 shoulder formed at thebottom'of such opening. It 7 is held m place by means oi the screw This-member 15 provided with a reduced central portion 28 which slidab l'y; carries-a valve disc 29, such valve disc beingiin reality an annular washer-likeg member',-- and freely slidable upon the reduced ortion-2s. It

A closes the apertures throu'gli the member 26 ,whe'nin seated p osition, assh'own in Figure Ab ve the member 26 a secondiinember 30 iscylindrical,

aperture 20. This member "is hanging member 33 projects overe'ach ofthe cylindrical openings 20 iorthe'cylinde'rs, as may, be seenfromFig'L'ire 5,, an'd is'held in place by means of a single screw 3% '(see Figure 4). It'is provided with a'p'lurality of ribs 35 to-"prevent sticking" of theoutlet,

' annular valve 36,- such valve beingsiniilar to the valve 29 and freely slidable upon-the reduced portion 32.

aslthe suctionpipe 3) opens I directly intotheinlet or sucti n' cayity 22065 the i pump. Consequently," no gasket is need The member 30,siii1'ilar t'o the'meinber 2-6, is provided with? a, plurality of outletap ert'ure's closed by the' ring-like' valve36. V

@It is thus-apparent that the outer member 33-inaybe readily removedg together with the valve-carrying unit, to permit inspection,

repair or cleaning of the valves r 7 It; is an arent mana ements no leakii'i' p ovided with" an outwardly extending flangefil-wliich rests upon' the' top of the valve head 18; The member 30 is provided with a re'duced projection 3:2, and is held in jla'ce by'an overhanging member 33, spaced ir o'in the hody oi the member 30 and contacting with the upper" end "of the reduced portion' 32. This overed for the valve cap :23, as this'capmerely forms the discharge chamber." Y

In'addition to these features, it is to be noted that the pipe 37, which is threaded" into the -v'alve' head, is joined'by means of a flexible hose 38 with a short pipe 39 weldedto the vacuum tank, thus providing a simple inegzpensiveconnection' which is readily arren-ea or ashamed" and which eliminates vihration upon the: welded connection of the suction pipe 391withthe vacuum tank;-

Also, theflexible coupling 38 avoids the necessity of close, accurate fittings and: alignment 'otparts.

' will be seen further that the valve construction is such that the valves; as stated,

aresim'p'le, sure in their seating action, and

may be readily removedfor inspectionko'r renewal." Furtherthan' this, by providing a: crank' case for the pump formulasa po'rnon of the vacuum tank itself, the, pum

he 'setfdown lower reference to the t on;

pulleyl lO connectedibymeans of belt 41 with the pulley/10f the "motor; Qbviously; La s lent chain drive'orifother drive could be substituted for the one disclosed herein.

"It willjtherefore be seen that a very'coini',

construction h 1 as alco ned pump, and

wa s a. driving motor.

been providech fwhiclr Althon'gh fthis'invention has been de' in" considerab V etail, such descrip tion is"intended as illustrativ e rather than limitln embodiedand as' the scope of such lilv'ntldlf inent 479i I Hilde-1" b109 1 & vithi' s i epd le 'm mac. a'lpa r' t i eslriei vitl airbas f he prep and xpend ng nwa div:i eia diqp fi 66h partin'ent'; a crank shaft for" said pi mp'ica'r'f said open compartment} meansrbr driving i v. a jp p w thsaid va'cuum compart e r The'fpuinp shaft 15' is provided vv'itli' a vacuum'tank as asthe invention may be'vari ously:

i 4. .i l e hffi "inlet portionandd alvirig a Hit gedbase seat;

tank; thereby avoiding a to heavy=construe I i 11 Ire. embin d. a uum ankie W 1i 2.! a e e h i F eun ii mii and vie uum tank, the combination ofa't'ankhaving a vacuum. e p rfimen a havin il l e p' fij' 'e z ifiii rtment mal e t me i n d compartment serv ngias' a crankcase; 31 am fla e n ifi ing' hi heme fi ed 9 open compartment, and having ancutward- V xhr isetine fl er sti 1 ;A are means for detachably seeunng .said'liase in v vacuum compartment.

' the combination of a tank having an enclosed ings rigid with the base of the pump andex tending downwardly into said open complace; a crank shaft carried by said base and positioned within said open compartment;

said pump having a laterally extending valve head on said cylinder block provided with an inlet portion and having'a valve cap provided with an outlet portion; a pipe joining the inlet portion of said pump with said 7 tank; an electric motor mounted upon the upper side of said tank, said tank having means for attaching said motor in place said crank shaft having a pulley locatedexterior- 1y of said tank and belted to said motor.

3. In a combined vacuum tank and pump, the combination of a tank having a closed vacuum compartment and an open compartment, a cylinder block provided with an in let portion, a base forming a closure for the open compartment, a pair of bearings rigid with the base of'the pump and extending downwardly into said open compartment, a crank shaftfor said pump carried by said bearings and located within said open cornpartment, means for driving said crank shaft, means for detachablysecuring the pump to-said tank, and means connecting the inlet portion of sai V 4. In a combined vacuum tank and pump,

vacuum compartment and an open compartment, a cylinder block provided with an inlet portion, a base mounted upon said tank above said open compartment, a pair of bearpartment, a crankshaft for said pump carried by said bearings and located within said open compartment, means for driving said crank shaft, means for detachably' securing said pump to said tank, means connecting the,

inlet portion of said pump with compartment.

In testimon said vacuum in the county of Waukesha and State of Wisconsinr,

HERMAN L. ENGELS; ROLLAND BUSLAFF.

d pump with said y that weclaim the foregoing n we have hereunto set our hands at lVauke'sha. 

